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Physics · 2013 · Shift 0

28 questions from this JEE Main paper

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2013 · Shift 0
Physics

Physics · 2013 · Shift 0

28 questions from this JEE Main paper

Geometrical Optics2 questions Electronic Devices2 questions Dual Nature of Radiation1 questions Atoms and Nuclei1 questions Electromagnetic Waves1 questions Wave Optics2 questions Alternating Current1 questions Electromagnetic Induction2 questions Magnetic Properties of Matter1 questions Current Electricity2 questions Capacitor1 questions Electrostatics2 questions Waves1 questions Simple Harmonic Motion1 questions Heat and Thermodynamics2 questions Properties of Matter1 questions Gravitation1 questions Rotational Motion1 questions Center of Mass1 questions Motion in A Plane1 questions Units and Measurements1 questions

Q48.Diameter of a plano-convex lens is $6 c m$ and thickness at the center is $3 mm$ . If speed of light in material of lens is $2 \times 1 0^{8} m / s,$ the focal length of the lens is
Physics · Geometrical Optics · MCQ
Q49.The $I$ - $V$ characteristic of an $L E D$ is
Physics · Electronic Devices · MCQ
Q50.The anode voltage of a photocell is kept fixed. The wavelength $λ$ of the light falling on the cathode is gradually changed. The plate current $I$ of the photocell varies as follows :
Physics · Dual Nature of Radiation · MCQ
Q51.In a hydrogen like atom electron make transition from an energy level with quantum number $n$ to another with quantum number $(n - 1)$ . If $n >> 1,$ the frequency of radiation emitted is proportional to :
Physics · Atoms and Nuclei · MCQ
Q52.The magnetic field in a travelling electromagnetic wave has a peak value of $20 n T$ . The peak value of electric field strength is :
Physics · Electromagnetic Waves · MCQ
Q53.A diode detector is used to detect an amplitude modulated wave of $60%$ modulation by using a condenser of capacity $250$ picofarad in parallel with a load resistance $100$ kilo $o hm .$ Find the maximum modulated frequency which could be… Includes diagram
Physics · Electronic Devices · MCQ
Q54.The graph between angle of deviation $(i)$ and angle of incidence $(i)$ for a triangular prism is represented by
Physics · Geometrical Optics · MCQ
Q55.Two coherent point sources $S_{1}$ and $S_{2}$ are separated by a small distance $^{'} d^{'}$ as shown. The fringes obtained on the screen will be Includes diagram
Physics · Wave Optics · MCQ
Q56.In an $L C R$ circuit as shown below both switches are open initially. Now switch $S_{1}$ is closed, $S_{2}$ kept open. ( $q$ is charge on the capacitor and $τ = R C$ is Capacitance time constant). Which of the following statement is correct… Includes diagram
Physics · Alternating Current · MCQ
Q57.A metallic rod of length $^{'} ℓ^{'}$ is tied to a string of length $2 ℓ$ and made to rotate with angular speed $w$ on a horizontal table with one end of the string fixed. If there is a vertical magnetic field $^{'} B^{'}$ in the region, the $e . m . f$ … Includes diagram
Physics · Electromagnetic Induction · MCQ
Q58.A beam of unpolarised light of intensity $I_{0}$ is passed through a polaroid $A$ and then through another polaroid $B$ which is oriented so that its principal plane makes an angle of $4 5^{\circ}$ relative to that of $A$ . The…
Physics · Wave Optics · MCQ
Q59.A circular loop of radius $0.3 c m$ lies center of the small loop is on the axis of the bigger loop. The distance between their centers is $15 c m .$ If a current of $2.0 A$ flows through the smaller loop, than the flux linked with bigger loop is
Physics · Electromagnetic Induction · MCQ
Q60.Two short bar magnets of length $1 c m$ each have magnetic moments $1.20 A m^{2}$ and $1.00 A m^{2}$ respectively. They are placed on a horizontal table parallel to each other with their $N$ poles pointing towards the South. They have a common…
Physics · Magnetic Properties of Matter · MCQ
Q61.This questions has Statement - $I$ and Statement - $I I$ . Of the four choices given after the Statements, choose the one that best describes into two Statements. Statement - $I$ : Higher the range, greater is the…
Physics · Current Electricity · MCQ
Q62.The supply voltage to room is $120 V .$ The resistance of the lead wires is $6Ω$ . A $60 W$ bulb is already switched on. What is the decrease of voltage across the bulb, when a $240 W$ heater is switched on in parallel to the bulb?
Physics · Current Electricity · MCQ
Q63.Two capacitors $C_{1}$ and $C_{2}$ are charged to $120 V$ and $200 V$ respectively. It is found that connecting them together the potential on each one can be made zero. Then
Physics · Capacitor · MCQ
Q64.A charge $Q$ is uniformly distributed over a long rod $A B$ of length $L$ as shown in the figure. The electric potential at the point $O$ lying at distance $L$ from the end $A$ is Includes diagram
Physics · Electrostatics · MCQ
Q65.Two charges, each equals to $q,$ are kept at $x = - a$ and $x = a$ on the $x$ -axis. A particle of mass $m$ and charge $q_{0} = \frac{q}{2}$ is placed at the origin. If charge $q_{0}$ is given a small displacement $$\left( {y \lt \lt a}…
Physics · Electrostatics · MCQ
Q66.A sonometer wire of length $1.5 m$ is made of steel. The tension in it produces an elastic strain of $1%$ . What is the fundamental frequency of steel if density and elasticity of steel are $7.7 \times 1 0^{3} k g / m^{3}$ and $2.2 \times 1 0^{11} N / m^{2}$ …
Physics · Waves · MCQ
Q67.An ideal gas enclosed in a vertical cylindrical container supports a freely moving piston of mass $M .$ The piston and the cylinder have equal cross sectional area $A$ . When the piston is in equilibrium, the volume of the gas is $V_{0}$ and…
Physics · Simple Harmonic Motion · MCQ
Q68.The above $p$ - $v$ diagram represents the thermodynamic cycle of an engine, operating with an ideal monatomic gas. The amount of heat, extracted from the source in a single cycle is Includes diagram
Physics · Heat and Thermodynamics · MCQ
Q69.Assume that a drop of liquid evaporates by decreases in its surface energy, so that its temperature remains unchanged. What should be the minimum radius of the drop for this to be possible ? The surface tension is $T,$ density of liquid is…
Physics · Heat and Thermodynamics · MCQ
Q70.A uniform cylinder of length $L$ and mass $M$ having cross-sectional area $A$ is suspended, with its length vertical, from a fixed point by a mass-less spring such that it is half submerged in a liquid of density $σ$ at equilibrium…
Physics · Properties of Matter · MCQ
Q71.What is the minimum energy required to launch a satellite of mass $m$ from the surface of a planet of mass $M$ and radius $R$ in a circular orbit at an altitude of $2 R$ ?
Physics · Gravitation · MCQ
Q72.A hoop of radius $r$ and mass $m$ rotating with an angular velocity $ω_{0}$ is placed on a rough horizontal surface. The initial velocity of the center of the hoop is zero. What will be the velocity of the center of the hoop when it…
Physics · Rotational Motion · MCQ
Q73.This question has statement $I$ and statement $I I$ . Of the four choices given after the statements, choose the one that best describes the two statements. Statement - $I$ : A point particle of mass $m$ moving with…
Physics · Center of Mass · MCQ
Q74.A projectile is given an initial velocity of $(i + 2 j)$ m/s, where $i$ is along the ground and $j$ is along the vertical. If g = 10 m/s2, the equation of its trajectory is:
Physics · Motion in A Plane · MCQ
Q75.Let [ $ε_{0}$ ] denote the dimensional formula of the permittivity of vacuum. If M = mass, L = length, T = time and A = electric current, then:
Physics · Units and Measurements · MCQ